From: amker <amker@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 8 Aug 2017 14:52:25 +0000 (+0000)
Subject: 	* tree-ssa-loop-ivopts.c (relate_compare_use_with_all_cands): Handle
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f788eee305721f9e7264448d92fb58bf3239ba08;p=thirdparty%2Fgcc.git

	* tree-ssa-loop-ivopts.c (relate_compare_use_with_all_cands): Handle
	boundary case for the last candidate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@250960 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 743e3dbe6ecf..e62420b9ccbd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-08-08  Bin Cheng  <bin.cheng@arm.com>
+
+	* tree-ssa-loop-ivopts.c (relate_compare_use_with_all_cands): Handle
+	boundary case for the last candidate.
+
 2017-08-08  Bin Cheng  <bin.cheng@arm.com>
 
 	* doc/invoke.texi: Document -ftree-loop-distribution for O3.
diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c
index 1cbff04d1e5b..b65cd96f4ed6 100644
--- a/gcc/tree-ssa-loop-ivopts.c
+++ b/gcc/tree-ssa-loop-ivopts.c
@@ -5284,13 +5284,13 @@ set_autoinc_for_original_candidates (struct ivopts_data *data)
 static void
 relate_compare_use_with_all_cands (struct ivopts_data *data)
 {
-  unsigned i, max_id = data->vcands.length () - 1;
+  unsigned i, count = data->vcands.length ();
   for (i = 0; i < data->vgroups.length (); i++)
     {
       struct iv_group *group = data->vgroups[i];
 
       if (group->type == USE_COMPARE)
-	bitmap_set_range (group->related_cands, 0, max_id);
+	bitmap_set_range (group->related_cands, 0, count);
     }
 }